Geology Quiz Guide
Formation of Magma
*Almost all magma begins its life as basalt (because of partial melting of the mantle)
1) Rifting Environments- by decompressive melting
Ex) Inner core and outer core
2) Convergent Boundaries- by dehydration melting
How Old is our Solar System and what is its origin? How did it form? What is the evidence for this age
and how it formed? How and when did the moon form and what is the evidence for this?
What is magma? What factors control the physical properties of magm
Earth is composed of Lithosphere and Asthenosphere.
Lithosphere- The rigid upper portion of the Crust AND Mantle.
-Referred to as tectonic plates (7major plates and 12 minor plates)
Asthenosphere- plastic like, few % melt in i